Carrier 40MBFAQ Service Manual page 23

40MBFAQ: Service Manual
DIAGNOSIS AND SOLUTION (CONT.)
EH 0E (Water-Level Alarm Malfunction Diagnosis and Solution)
Recommended parts to prepare:
• Connection wires
• Water-level switch
• Water pump
• Indoor PCB
Troubleshooting
Shut off the power supply and
Replace the indoor main PCB.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
turn it on 2 minutes later.
Does a problem remain?
YES
Is the water-level switch I
inserted properly?
YES
Is the water-level switch
broken?
YES
Replace the water pump.
Does a problem remain?
YES
NO The unit is operating normally.
Insert the water-level
NO
switch properly.
NO Replace the water-level switch.
NO The unit is operating normally.
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